It is the exact same syntax inside of the machinefile:

user1@machine1 slots=4
user2@machine2 slots=3
....


On Mar 10, 2010, at 5:41 AM, Olivier Riff wrote:

> Hello,
> 
> I am using openmpi on several machines which have different user accounts and 
> I cannot find a way to specify the login for each machine in the machinefile 
> passed to mpirun.
> The only solution I found is to use the -host argument of mpirun, such as:
> mpirun -np 2 --host user1@machine1,user2@machine2 MyProgram
> which is very inconvenient with a lot of machines.
> 
> Is there a way to do the same using a machinefile text? :
> mpirun -np 2 -machinefile machinefile.txt MyProgram
> 
> I cannot find the appropriate syntax for specifying a user in 
> machinefile.txt...
> 
> Thanks in advance,
> 
> Olivier
> 
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